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chg: checksum test

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iceman1001 2020-03-10 10:45:01 +01:00
parent e749174d79
commit 66d3abafb2
1 changed files with 16 additions and 10 deletions
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26
client/cmdlfindala.c
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@ -714,27 +714,33 @@ int getIndalaBits(uint8_t fc, uint16_t cn, uint8_t *bits) {
// add cn
bits[42] = ((cn >> 15) & 1); // b16
bits[45] = ((cn >> 14) & 1); // b15
bits[45] = ((cn >> 14) & 1); // b15 - c
bits[43] = ((cn >> 13) & 1); // b14
bits[40] = ((cn >> 12) & 1); // b13
bits[40] = ((cn >> 12) & 1); // b13 - c
bits[52] = ((cn >> 11) & 1); // b12
bits[36] = ((cn >> 10) & 1); // b11
bits[35] = ((cn >> 9) & 1); // b10
bits[51] = ((cn >> 8) & 1); // b9
bits[35] = ((cn >> 9) & 1); // b10 - c
bits[51] = ((cn >> 8) & 1); // b9 - c
bits[46] = ((cn >> 7) & 1); // b8
bits[33] = ((cn >> 6) & 1); // b7
bits[37] = ((cn >> 5) & 1); // b6
bits[33] = ((cn >> 6) & 1); // b7 - c
bits[37] = ((cn >> 5) & 1); // b6 - c
bits[54] = ((cn >> 4) & 1); // b5
bits[56] = ((cn >> 3) & 1); // b4
bits[59] = ((cn >> 2) & 1); // b3
bits[59] = ((cn >> 2) & 1); // b3 - c
bits[50] = ((cn >> 1) & 1); // b2
bits[41] = (cn & 1); // b1
bits[41] = (cn & 1); // b1 - c
// checksum
// ICEMAN: todo: needs to calc
uint8_t chk = 0;
//sum(y2, y4, y7, y8, y10, y11, y14, y16
chk += 0; //y == 75
chk += ((cn >> 14) & 1); //y2 == 75 - 30 = 45
chk += ((cn >> 12) & 1); //y4 == 70 - 30 = 40
chk += ((cn >> 9) & 1); //y7 == 65 - 30 = 35
chk += ((cn >> 8) & 1); //y8 == 81 - 30 = 51
chk += ((cn >> 6) & 1); //y10 == 63 - 30 = 33
chk += ((cn >> 5) & 1); //y11 == 67 - 30 = 37
chk += ((cn >> 2) & 1); //y14 == 89 - 30 = 59
chk += (cn & 1); //y16 == 71 - 30 = 41
if ((chk & 1) == 0) {
bits[62] = 1;